Development of Zr-based metallic glasses to utilize thermoplastic forming processes of engineering plasticsopen access
- Authors
- Ryu, W.H.; Kim, K.J.; Kwak, M.K.; Ryu, C.W.; Park, E.S.
- Issue Date
- Aug-2023
- Publisher
- Elsevier Ltd
- Keywords
- Alloy design; Flash-DSC; Metallic glass; Processing optimization; Thermoplastic formability parameter; Thermoplastic forming window
- Citation
- Materials and Design, v.232
- Journal Title
- Materials and Design
- Volume
- 232
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/32932
- DOI
- 10.1016/j.matdes.2023.112100
- ISSN
- 0264-1275
1873-4197
- Abstract
- Metallic glasses (MGs) have garnered significant attention for the possibility to use as advanced structural materials in recent decades. However, their high processing costs remain a major obstacle to their commercialization. This research offers a practical guideline to significantly reduce production costs through tailored alloy design and precise control of thermoplastic forming (TPF) process parameters. Specifically, we discovered commercially available MGs with a low glass transition temperature (Tg) can be developed in the Zr-rich alloy systems. Moreover, we addressed the challenge of maintaining a wide TPF window in Be-free Zr-based MGs while keeping Tg low. Our research has yielded the development of Be-free Zr-rich multicomponent MGs with a low Tg below 350 °C (623 K) and a wide TPF window of over 70 K, resulting in excellent thermoplastic formability (TPFA). Notably, the MGs we developed exhibit a lower Tg than advanced engineering plastics like Polyimide and Polybenzimidazole, which suggests that the TPF process of plastics could be extended to MGs. In addition, we employed Flash-DSC to accurately identify the TPF window and TPFA according to the heating rate in a wide range from 10-1 to 104 K/s, and proposed novel TPFA parameters that are based on continuous heating transformation diagram with iso-viscosity contours. Our findings demonstrate that even marginal MGs have a significant advantage in manufacturing micro-to-nano scale products that can be molded at ultra-fast heating rates, similar to advanced engineering plastics. Indeed, this work will undoubtedly inspire us to further explore the potential of MGs as a practical material for industrial applications. © 2023 The Authors
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - ETC > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/32932)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.